DSD Information System
Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 72 (Motor Generator Control System (AWD) - Diagnostic Codes (2 Of 5)) >> MOTOR GENERATOR CONTROL SYSTEM (for AWD) >> DTC P0A79-9E: Drive Motor "B" Inverter Stuck On; DTC P1C5E-19: Drive Motor "B" Inverter Circuit Current Above Threshold [12/2019 - 11/2023] >> DTC Summary

DTC Summary

WARNING: This page is about a different variant/trim than selected.
  1. MALFUNCTION DESCRIPTION 

    This DTC indicates that a large current flowed through the rear motor inverter. The cause of this malfunction may be one of the following:

    Area Main Malfunction Description
    Rear traction motor with transaxle assembly
    • Open or short circuit in the rear motor coils
    • Rear motor (MGR) internal malfunction (iron particles or damage from foreign objects)
    Resolver Open or short circuit in the rear motor resolver
    Rear motor inverter 
    • Rear motor inverter internal circuit malfunction
    • Malfunction in ECU that controls the rear motor inverter
    • Rear motor inverter control sensor (current sensor, voltage sensors (VH, VL), etc.)
    Inverter cooling system
    • Inverter water pump assembly malfunction
    • Coolant leak
    • Frozen
    • Blockage